Alert archive / Missouri / Heat Advisories in 2009

Heat Advisory 3, NWS St. Louis, MO

August 7, 200911 counties in Missouri; 5 counties in Illinois

NWS St. Louis, MO issued this heat advisory at Aug 7, 2009, 4:18 AM CDT for 11 counties in Missouri; 5 counties in Illinois. It took effect at Aug 8, 2009, 12:00 PM CDT. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued: Aug 7, 2009, 4:18 AM CDT (09:18 UTC)
In effect from: Aug 8, 2009, 12:00 PM CDT
Expired: Aug 9, 2009, 7:00 PM CDT
In force: 31 hr
Issued by: NWS St. Louis, MO

Counties Adams County, IL, Brown County, IL, Madison County, IL, Pike County, IL, Saint Clair County, IL, Audrain County, MO, City of Saint Louis, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 09:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before this heat advisory went out at Aug 6, 11:40 PM CDT, 4 hours 38 minutes earlier.

Area forecast discussion, Aug 6, 11:40 PM CDT, 4 hours 38 minutes before

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Nearby

Heat Advisories in Missouri, 2009 Heat Advisories in Illinois, 2009 Every heat advisory in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.